ᐅ Floor plan for a single-family house, 130 sqm, hillside plot, 2 stories

Attached is the questionnaire with the floor plan and plot details for discussion.

Development Plan / Restrictions
Plot size: 2200 sqm (0.54 acres)
Slope: South-facing slope, about 2.50 m (8 ft) within the building zone
Floor area ratio: §34 – adjacent properties have 1.5 to 2 stories with gable roofs
Plot ratio: §34
Building zone, building line, and boundary
Edge development
Number of parking spaces: 2
Number of floors: 2 full floors
Roof type: 22-degree gable roof
Architectural style
Orientation: South-facing slope, accordingly oriented
Maximum heights / limits
Additional requirements

Client Requirements
Architectural style, roof type, building type: Classic, gable roof, single-family house without projections
Basement, floors: No basement, but due to slope, the lower residential floor should be partially embedded into the hillside. Above that, the ground floor as a full story.
Number of occupants, ages: 2 adults (42 and 49), 1 child (19)
Space requirements on ground and upper floors: approximately 65 sqm (700 sq ft) each
Office: Family use or home office? No
Overnight guests per year: negligible
Open or closed layout: open on the ground floor
Conservative or modern construction:
Open kitchen with island: Yes, with island
Number of dining seats: 6
Fireplace: No
Music / stereo wall
Balcony, roof terrace: No
Garage, carport: Double garage preferred, carport acceptable if necessary
Utility garden, greenhouse
Additional wishes: Photovoltaics planned, mechanical ventilation system included in price, KfW55 energy standard

House Design
Planning source: DIY and general contractor planner
-Planner from construction company: Yes
-Architect: No
-Do-it-yourself: Yes
What do you especially like? Why? South orientation, view
What do you dislike? Why? That’s for you to tell us
Price estimate from architect/planner: 330,000
Personal price limit for house, including fittings: 450,000 including additional construction costs
Preferred heating technology: Air-to-water heat pump

If you have to give up on which details / expansions
-Can you do without: Garage
-Can’t do without: Not building smaller

Why did the design evolve as it is now? Example:
Information from the web (including this forum) and contacts with other builders
What makes it especially good or bad in your view? Don’t know

What is the most important / fundamental question about the floor plan summarized in 130 characters?
Because of this forum, the building shell is planned as it currently is. The lower residential floor is to be half embedded into the slope on the valley side. On the open side are the two bedrooms and the main entrance. To the right, the double garage, also partly embedded in the slope. In the slope are the utility room and a bathroom. The ground floor above is planned entirely for living, with terraces and garden access, plus a small bathroom.

Fire away and thank you all.
Plan top is north.

I think the images were too small, so here they are a bit larger.

Draw the house on the plot plan, and make the site plan excerpt significantly larger – this way, it is not possible to clearly see the actual building envelope.

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I wouldn’t necessarily build the garage attached to the house, especially considering the entrance visible at the top. The sleeping area and bathroom should be located away from the entrance. You can hear everyone coming and going – with an older child, there are often nighttime visitors. Also, you frequently go from the bedroom to the bathroom, sometimes accompanied. I wouldn’t want to run into a delivery person there. Walking barefoot through street grime in winter at night is also something to avoid.

Is it intentional that the terrace is situated uphill?

I would definitely place the entrance at the top as well. Just thinking about carrying groceries from the car to the kitchen every time... oh no. Otherwise, I like the idea!

I really like the clarity and simplicity of the design. Upon closer inspection, a few thoughts come to mind:

For me, it’s not about having the entrance at the bottom or at the top; I would build two entrances – one at the bottom for the adult son directly into his area, and one at the top for everyone else. However, this basic idea doesn’t quite fit with the lower floor plan, as a useful vestibule and the staircase would interfere with each other, unless you add a vestibule in front, which could disrupt the clean facade and would also increase costs.

An extra shower is a great feature when living with three people. The location in your house isn’t ideal, but it’s definitely manageable.

A utility room next to the bedroom worries me – make sure to plan for very good soundproofing. Noisy heat pumps (by the way, where exactly will the outdoor unit be placed?) and running washing machines are not exactly conducive to comfortable living.

Do you seriously want to sit in the living room facing away from the view on a sloped site? Surely this can be improved without giving up TV and an aquarium.

The kitchen and dining area is disproportionately large compared to all the other rooms. You essentially have an indoor terrace in front of the outdoor terrace.

The beautiful, well-structured, clear, and straight staircase comes at the cost of spatial inefficiency, making the living room and youth room unnecessarily small.